(Corrects Quercus' nationality in 7th para, makes clear firm is unlisted)
* Current electricity production via renewables is 340 MW
* Tehran has signed agreements to install 2,380 MW
* Has ambitions to reach 5 GW in renewable output by 2022
* Entrants are mainly European, some 120 have signed deals
By Lefteris Karagiannopoulos
OSLO, Oct 19 (Reuters) - Renewable energy is booming in Iran, where installed capacity is expected to grow at least sevenfold over the next five years, despite U.S. President Donald Trump's more confrontational attitude towards Tehran.
Iran's latest deal was signed on Tuesday, when Norway's Saga Energy concluded a $2.9 billion deal to build solar power plants in the oil-producing country.
That gives Iran agreements with 124 companies, most of them European, to install 2,380 megawatts (MW) in renewable capacity, in addition to the 340 MW currently in place, according to data from Iran's Energy Ministry.
They range from wind power to solar farms and hydropower dams to burning biomass and waste to heat homes. Iran is a signatory of the 2015 Paris climate agreement committing 195 nations to limit their carbon emissions. "Iran is trying to increase the share of renewable energy in the energy mix of the country and also (honour) our international environmental commitments," Fareeh Bahrami, an official at SATBA, the state agency promoting renewables under the authority of Iran's Energy Ministry, told Reuters.
Iran's ambitions is to install 5 gigawatts of renewables by 2022, he said.
Among the companies engaged is unlisted British firm Quercus, which will help build the world's sixth-largest solar farm in central Iran, investing over half a billion euros.
Dutch energy firm Global Renewables Investments (GRI) plans to build up solar and wind farms that could produce up to 1.7 GW of electricity.
To finance the projects, the companies have used European export credit agencies, private equity and Asian financial institutions.
"We have been approached by a number of finance providers, especially from the Far East, including China, proposing various options for construction and financing," Quercus CEO Diego Biasi told Reuters.
However, the United States is taking a harder tone towards Iran lately. Trump said on Friday he may ultimately terminate the 2015 nuclear deal, which could mean some international sanctions may be restored.
As a result, some companies already invested in Iran said they would be taking a "wait-and-see" approach, such as Greek conglomerate Mytilineos Holdings, which built a 10 MW solar farm in Iran.
"We are monitoring developments before making any new project plans," spokeswoman Antigoni Fakou told Reuters.
Others said they would continue with their investments, including Quercus and GRI. "We won't change our strategy on Iran," GRI co-founder Gerben Pek told Reuters. (Editing by Gwladys Fouche, Larry King)